Quartz-mill.



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3 Sheets-Sheet V (No Model.)

No. 655.793. Patented Aug. I4, |900.

A. T. MGMURTREY.

QUARTZ MILL.

(Application `filed. Sept. 2, 1899.) (No Model.) 3 Sheets-Sheet 3.

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Illllll firren ALEXANDER T. MOMURTREY, OF l-VIEDFORD, OREGON.

QUARTZ-MILL.

SPEGIFCATION forming part of Letters Patent No. 655,793, dated August 14, 1900.

indication flied september 2,1899. seria No. 729,356. (No man.)

To @ZZ wwnt t may concern: Y

Be it known that I, ALEXANDER T. MCMUR- THEY, residing at Medford, in the county of Jackson and State of Oregoinhave invented a new and useful Quartz-Mill, of which the following is a specification.

My invention relates to quartzmills, and particularly to an improved quartz-mill employin g loose rollers or shoes, and has for its object the general improvement of the construction and operation of such mills.

With this object in view my invention consists in the improved construction, arrangement, and combination of parts hereinafter fully described and afterward specifically pointed out in the appended claims.

In order to enable others skilled in the art to which my invention most nearly appertains to make and use the same, I will now proceed to describe its construction and operation, reference being had tothe accompanying drawings, forming part hereof, in which Figure 1 is a vertical sectional view of a mill constructedin accordance with myinv'ention, part of the feeding mechanism being shown. Fig. 2 is ahorizontal sectional view on the plane indicated `by the'dotted line a b of Fig. 1 looking downward. Fig. 3 is a horizontal sectional view on the plane indicated by the dotted line c d of Fig. 1. Fig. fl is a detail perspective View of the inner and outer cylinder and clutch detached. Fig. 5 is a top plan View of the four-armed yokev or spider. Fig. 6 is a view in side elevation of the feedercap or toothed driving-cam. Fig. 8 is a detail perspective view of one of the knees for supporting the muller-cap. Fig. 9 is a similar View of one of the mullers detached. Fig. 10 is a similar View illustrating a hollow or shell shoe or roller and a solid one. Fig. 11 is a similar view illustrating two forms of, muller-connecting bars or bolts. Fig. 12 is a plan View of the dies. Fig. 13 is a detail perspective view of the coupling-pin. Fig. 14 is a detail perspective View of the false rim sometimes used when the screen is omitted.

Like numerals of reference mark the same parts wherever they occur in the several figures of the drawings.

Referring to the drawings by numerals, 1

' in the path of rotation of the cams.

indicates a step-bearing secured to any suitable base, in which is journaled a vertical shaft 2', upon which is keyed or otherwise secured a bevel gear-wheel 3, engaging the lower edge of a bevel gear-wheel 4 on horizontal shaft 5, which is driven from any suitable power and is the driving-shaftof the machine, thereby driving the vertical shaft 2 in one direction. Above the wheel 3 on shaft 2 is a collar 6, adjustabiy fixed by means of a setscrew 7. This collar supports a bevel gearwheel 8, loosely'mounted on the shaft 2 and engaging the upper edge of gear-wheel 5, thereby driving Vthe gear-wheel S in a direction opposite to the direction of the shaft 2 and gear-wheel 3;

Near the upper end of shaft 2 is a collar 9, adjustably but firmly secured to the shaft by means of set-screws 10. Upon this collar 9 rests a fourarmed yoke 11, keyed upon shaft 2 to rotate therewith, each of the arms of the yoke bein g slotted, as at 12, to receive bolts 13, which secure knees 14 to the arms. These knees are constructed as shown in detail in Fig. 8, being'provided with upper horizontal ends 15 to receive the bolts 13 and lower outwardly projected ends 16 to receive `the muller-cap or driving-ring 17, being secured thereto by bolts 1S, fwhich also secure a dished ring 19 to the cap, forming a hopper-mouth to receive and conduct the material from spout 2O of tank or box 21. A cam 22 is secured to each arm of the yoke and serves to intermits tingly raise and drop the spout through the cam. Fig. 7 is atop plan view of the mullermedium of a bar 23, secured thereto and lying ',lhe cams are secured by bolts 24, passing through the yoke-arms.

25 indicates the pan of the mill, mounted inder 27. In the pan are loosely set the outer cylinder 28, the shoes or rollers 29, and the mullers 30, the cylinder 2Sresting upon sectional circular dies 31, the shoes on` similar dies 32, and the mullers on similar dies. 33. The cylinder 2S is provided with diametricallyopposite notches 34 in its upper edges, in which rest the wings or lugs35 of a ringclutch36, provided with diametrically-oppoi rigidly and provided with a vertical rim 26 at 1 A its outer edge and a similar central rim forming what I denominate the intermediate cyl- IOO site notches 37 in its inner face intermediate of and ninety degrees removed from the lugs to receive outwardly-projecting wings or lugs 38 on the upper end of an inner cylinder 39, surrounding shaft 2 and secured in an annular groove in the upper faceof bevel gear- Wheel 8. The shoes surround the other cylinder 28, are set loosely on end, and are hollow or solid short cylindrical structures, when hollow being tightly plugged with hard Wood, as at 40. The mullers are of substantially-segmental shape, being sections of a fiat ring with inner and end vertical flanges, as at 4l 42, the end flanges being notched in theirupper edges, as at 43, to receive the headed bolts 44: for connecting the mullers. These bolts are provided with nuts 45 for adjustment, or they may be solid-headed bars, as at 46 in Fig. ll. One of these connecting-bolts, as yat 47, is provided with a central eye 48 to receive a coupling-pin 49, which passes downward through the muller-cap or driving-ring J7', tensionplates 50 being placed under the head of the pin and secured to the cap by a screw.

By means of their connections with the gear-wheel 8 and with each other the inner and outer cylinders 39 and 38 are driven in the opposite direction to the rotation of the shaft 2, and by means of the yoke, knees, cap, and coupling-pin the mullers are driven in the opposite direction to the cylinders or in the same direction as the shaft. By this means the quartz is thrown in both directions against and between the shoes and is thus thoroughly and quickly ground up or pulverized. The rotation of the mill throws the water outward through a screen secured to the pan into a surrounding trough 5l, and the pan maybe entirely emptied by removing the screw-plug 52. VVearing-shoes may be attached to each muller, if desired, the shoes may be made of any suitable size, the slots to receive the muller-connecting bolts maybe vertical, horizontal, or diagonal, and the screen may be dispensed with, a false rim 53 being then used. The outer cylinder may be made non-rotatable and may, if desired, be made in sections secured together by lugs and steel band.

The pan may be used as an amalgamatingpan to work sulfnrets or tailings. As the outer cylinder Wears off at the bottom a bracket may be put into the slots in its upper edge, as shown in dotted lines in Fig. 4, to raise the clutch-rin g lugs to proper height.

' Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent of the United States, is-

l. In a quartz-mill, the combination with the'pan of mullers, consisting of sections of a flat ring, provided with inner and end anges, the latter having opposite notches, of doubleheaded bolts dropped into said notches, to

3. In a quartz-mill, the combination withV a fixed horizontal pan and a set of revolving mullers, of an oppositely-driven cylinder and cylindrical shoes or rollers loosely set on end between the mullers and cylinder, substantially as described.

4E. In a quartz-mill, the combination with a fixed horizontal pan and a set of revolving mullers, of a central vertical cylinder and cylindrical shoes or rollers set loosely on end between the cylinder and mullers, substaniially as described.

5. In a quartz-mill, the combination with a fixed horizontal pan and a set of revolving mullers, of a central vertical cylinder, cylindrical shoes or rollers set loosely on end between the cylinder and mullers, and a circular screen surrounding the pan and projecting above its edges,substantiallyas described.

o'. In a quartz-mill, the combination with a rigid, horizontal pan, of a vertical shaft projecting centrally through it and driven in one direction, a setof mullers connected with the shaft and .rotating therewith, a bevel gear-wheel mounted loosely on the shaft and oppositely driven, a central cylinder in the pan connected with the gear-wheel and rotating therewith, and loose rollers or shoes set on end in the pan between the mullers and cylinder, substantially as described.

7. In a quartz-mill, the combination with a rigid horizontal pan, of a vertical shaft projecting centrally through it and driven in one. direction, al set of mullers connected with the shaft and rotating therewith, a bevel gear-wheel mounted loosely on the shaft and oppositely driven a cylinder around the shaft and secured to the gear-wheel, a ring-clutch on the cylinder having radial wings, a central cylinder in the pan having notches in its upper edge to receive the wings, and loose shoes or rollers set on end between the central cylinder and the mullers, substantially as described. y

A. T. MCMURTREY.

Witnesses:

M. S. HAMMER, J. G. Davis.

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